3239371 - E3090 PARKING SENSOR - Functional description

Functional description

The parking sensor control unit M84 is supplied at pin 1 of connector A by the ignition-operated line INT protected by fuse F1 of junction unit B1 with this line sending the power supply to the control unit M84 with reverse gear engaged (switch I20) this supply is also sent from pin 6 to pin 9 of connector A of M84; pins 16 of connector A of M84 is earthed. The control signals for activating the buzzer P44 are sent from pins 2 and 10 of connector A of M84. The four parking sensors K97 are connected to connector B of control unit M84; pin 1 provides the reference earth, pin 6 the power supply to the sensors; pin 4 supplies the signal to the right outer sensor K97D, pin 2 to the right inner sensor K97C, pin 3 to the right inner sensor K97B and pin 5 to the left outer sensor K97.